Light Ghost Grey FS 36375 vs USN Light Ghost Grey

How close are they?

ΔE 6.3, close: similar, with a visible difference side by side. USN Light Ghost Grey is a little darker than Light Ghost Grey FS 36375.

Can I use USN Light Ghost Grey instead of Light Ghost Grey FS 36375?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). USN Light Ghost Grey is a little darker than Light Ghost Grey FS 36375.

Can I use Light Ghost Grey FS 36375 instead of USN Light Ghost Grey?

The same difference applies the other way round: Light Ghost Grey FS 36375 is a little lighter.

ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.